1. The integument grew fast and overgrew the nucellus.

2. The nucellus is usually degraded and absorbed as the endosperm develops.

3. About weeks after pollination, the tip cells of nucellus broke and secreted liquid into ovular canal, which promoted pollen movement to the nucellus and played important role for pollen germination.

4. This mass, which connected the haustorium with nucellus was likely to be as an active functional unit of haustorium.

5. The archesporial cell below nucellus epiderm functions directly as the megaspore mother cell.

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6. The cells of the integument and nucellus of some plants form perfectly normal embryos.

7. The female archesporium differentiates from the single cell under the epidermis of nucellus.

8. Chalaza ( pl . chalaxae or chalazas ) The region of an angiosperm ovule where the nucellus and integuments merge.

9. It includes the process whereby a diploid cell of the nucellus develops into an embryo giving a diploid seed with a genetic constitution identical to the parent.

10. The female archesporium differentiates from many cells under the subhypodermis of nucellus.

11. Developmentof female gametophytes originate from subhypoclermal archesporial cells oriented in the nucellus, but only one of these directly develops into thePolyonum type embryo sac.

12. Food materials may be stored in a special tissue derived from the nucellus, called the perisperm.

13. The ovule is bitegminous and tenuinucellate. The archesporial cell locates under the nucellus epidermis, which develops into functional megasporocyte.

14. The tube nucleus disintegrates as the pollen tube penetrates the nucellus .

15. The ovule is bitegminous archesporial cell locates under the nucellus epidermis, which develops into functional megasporocyte.

16. About 4 weeks after pollination, the tip cells of nucellus broke and secreted liquid into ovular canal, which promoted pollen movement to the nucellus and played important role for pollen germination.